| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.intellij.codeInsight.hint; |
| |
| import com.intellij.openapi.actionSystem.CommonDataKeys; |
| import com.intellij.openapi.actionSystem.DataContext; |
| import com.intellij.openapi.actionSystem.PlatformDataKeys; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.actionSystem.EditorActionHandler; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.PsiDocumentManager; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| |
| /** |
| * @author ven |
| */ |
| public class PrevNextParameterHandler extends EditorActionHandler { |
| public PrevNextParameterHandler(boolean isNextParameterHandler) { |
| myIsNextParameterHandler = isNextParameterHandler; |
| } |
| |
| private final boolean myIsNextParameterHandler; |
| |
| private static PsiElement getExpressionList(Editor editor, Project project) { |
| int offset = editor.getCaretModel().getOffset(); |
| PsiFile file = PsiDocumentManager.getInstance(project).getPsiFile(editor.getDocument()); |
| if (file == null) return null; |
| return ParameterInfoController.findArgumentList(file, offset, -1); |
| } |
| |
| @Override |
| public boolean isEnabled(Editor editor, DataContext dataContext) { |
| Project project = CommonDataKeys.PROJECT.getData(dataContext); |
| if (project == null) return false; |
| PsiDocumentManager.getInstance(project).commitAllDocuments(); |
| |
| PsiElement exprList = getExpressionList(editor, project); |
| return exprList != null && ParameterInfoController.isAlreadyShown(editor, exprList.getTextRange().getStartOffset()); |
| } |
| |
| @Override |
| public void execute(Editor editor, DataContext dataContext) { |
| Project project = CommonDataKeys.PROJECT.getData(dataContext); |
| PsiElement exprList = getExpressionList(editor, project); |
| int listOffset = exprList.getTextRange().getStartOffset(); |
| if (myIsNextParameterHandler) { |
| ParameterInfoController.nextParameter(editor, listOffset); |
| } |
| else { |
| ParameterInfoController.prevParameter(editor, listOffset); |
| } |
| } |
| } |